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Meaning of oligoclase

ol•i•go•clase

Pronunciation: (ol'i-gō-klās"), [key]
— n. Mineral.
  1. a kind of plagioclase feldspar occurring commonly in white crystals, sometimes shaded with gray, green, or red.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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